>I started to write what I recall were .com files using assembly that was entered into some crude edit software that shipped with DOS That must have been debug

>I started to write what I recall were .com files using assembly that was entered into some crude edit software that shipped with DOS That must have been debug.com [0] [0] https://en.wikipedia.org/wiki/Debug_(command) https://en.wikipedia.org/wiki/Debug_(command)